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Protection for electric power systems (24 hours, 1480 euros, 1-5 March OR 4-8 October @ 8.30am CET)

Objective

Identify the most common protection devices and systems used in generation, transmission and distribution.

Audience

Engineers without experience in the field of electrical protection, as well as those who are interested in the theoretical aspects of their operation.

Course topics

Introduction to protections

Fault calculation

• Basics of fault calculation
• Short circuit and related physical phenomena
• Symmetrical components

Devices associated with protection systems

• Current transformer
• Voltage transformer
• Case studies

Basic concepts of protection relays

• General arrangement of a protection relay
• Required features of relays
• Classification of protection relays
• Comparators

Line protection

• Overcurrent relays
• Distance relays
• Protection of link lines
• Distribution system protection structure
• Reclosing

Protection for generators

• Generators connections
• Neutral connection and earth faults
• Stator fault protection
• Rotor fault protection
• Overload protection
• Protection of excitation reduction or loss
• Overvoltage protection
• – Load imbalance
• – Off-frequency operation
• – Mechanical faults

Protection for static machines

• – Differential protection for transformers
• – Current protection for transformers
• – Buchholz relay
• – Frame leakage protection
• – Overload protection
• – Shunt reactance protection
• – Capacitor bank protection

Protection for substations

• – Busbar differential protection
• – High impedance differential protection
• – Percentage restrained differential protection
• – Protection for air-core transformers
• – Inverse-time overcurrent protection
• – Overcurrent transformers location

System common protection and control

• – Underfrequency protection (Load Shedding)
• – Power swing protection and loss-of-synchronism protection
• – Disturbance recorder
• – Chronological event counter
• – Current and future trends of distributed control

Class time: Mon to Thu 8.30am - 1.30 pm CET

Fri: 8.30am - 12.30pm CET